113239653121 has 9 divisors (see below), whose sum is σ = 131730499971. Its totient is φ = 97060540752.

The previous prime is 113239653101. The next prime is 113239653127. The reversal of 113239653121 is 121356932311.

The square root of 113239653121 is 336511.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 89194809025 + 24044844096 = 298655^2 + 155064^2 .

It is not a de Polignac number, because 113239653121 - 2⁵ = 113239653089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113239653127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2331541 + ... + 2379613.

It is an arithmetic number, because the mean of its divisors is an integer number (14636722219).

Almost surely, 2^113239653121 is an apocalyptic number.

113239653121 is the 336511-st square number.

113239653121 is the 168256-th centered octagonal number.

It is an amenable number.

113239653121 is a deficient number, since it is larger than the sum of its proper divisors (18490846850).

113239653121 is an frugal number, since it uses more digits than its factorization.

113239653121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96160 (or 48080 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The spelling of 113239653121 in words is "one hundred thirteen billion, two hundred thirty-nine million, six hundred fifty-three thousand, one hundred twenty-one".